/Engine/Plugins/Experimental/LandscapePatch/Source/LandscapePatch/Public/LandscapeTexturePatchPS.h
Shader that converts a texture stored in some other encoding (where height is in the R channel) to the landscape "native" encoding, where height is stored as a 16 bit int split across the R and G channels. This is not perfectly reversible (in case of clamping and due to rounding), but it lets us store the texture in the way that it would be applied to the landscape (usually).
class FConvertToNativeLandscapePatchPS : public [FGlobalShader](API\Runtime\RenderCore\FGlobalShader)